| Great Driffield to Mangualde | 986.15 mi (1,587.06 km) |
| Great Driffield to Marco de Canavezes | 954.64 mi (1,536.35 km) |
| Great Driffield to Marinha Grande | 1,061.71 mi (1,708.65 km) |
| Great Driffield to Massama | 1,132.55 mi (1,822.66 km) |
| Great Driffield to Matosinhos | 964.37 mi (1,552.01 km) |
| Great Driffield to Mealhada | 1,012.01 mi (1,628.67 km) |
| Great Driffield to Melgaco | 896.14 mi (1,442.19 km) |
| Great Driffield to Melres | 966.58 mi (1,555.56 km) |
| Great Driffield to Mira | 1,013.66 mi (1,631.32 km) |
| Great Driffield to Miranda do Corvo | 1,028.60 mi (1,655.37 km) |
| Great Driffield to Mirandela | 919.00 mi (1,478.99 km) |
| Great Driffield to Mogadouro | 922.08 mi (1,483.95 km) |
| Great Driffield to Moimenta da Beira | 959.09 mi (1,543.51 km) |
| Great Driffield to Moita | 1,134.61 mi (1,825.98 km) |
| Great Driffield to Moncao | 902.87 mi (1,453.04 km) |
